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new function `setvbuf'

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This commit is contained in:
Roberto Ierusalimschy 2003-05-14 16:03:43 -03:00
parent 0ddedaee92
commit 524ae9fc3d
1 changed files with 13 additions and 1 deletions
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14
liolib.c
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@ -1,5 +1,5 @@
/*
** $Id: liolib.c,v 2.40 2003/04/30 20:15:55 roberto Exp roberto $
** $Id: liolib.c,v 2.41 2003/04/30 20:24:38 roberto Exp roberto $
** Standard I/O (and system) library
** See Copyright Notice in lua.h
*/
@ -457,6 +457,17 @@ static int f_seek (lua_State *L) {
}
static int f_setvbuf (lua_State *L) {
static const int mode[] = {_IONBF, _IOFBF, _IOLBF};
static const char *const modenames[] = {"no", "full", "line", NULL};
FILE *f = tofile(L, 1);
int op = luaL_findstring(luaL_checkstring(L, 2), modenames);
luaL_argcheck(L, op != -1, 2, "invalid mode");
return pushresult(L, setvbuf(f, NULL, mode[op], 0) == 0, NULL);
}
static int io_flush (lua_State *L) {
return pushresult(L, fflush(getiofile(L, IO_OUTPUT)) == 0, NULL);
}
@ -488,6 +499,7 @@ static const luaL_reg flib[] = {
{"read", f_read},
{"lines", f_lines},
{"seek", f_seek},
{"setvbuf", f_setvbuf},
{"write", f_write},
{"close", io_close},
{"__gc", io_gc},